In article 9Nz%a.131756$cF.34159@rwcrnsc53, John R Weiss jrweiss98155
@?.comNOSPAMcast.net writes
The probability of hitting a 747 under those conditions is significantly higher
than that of hitting a torpedo bomber. Further, they need not "shoot down" the
airliner to accomplish their purpose, but "only" cause enough visible damage so
that their presence is made known.

About a decade ago, the IRA managed to lob some home made mortars over
the fence at Heathrow, might even have hit a taxiway or runway. They
didn't hit an aircraft, not sure if they were aiming to (I don't
remember hearing much about any aircraft in the vicinity). Certainly
attracted attention though.

--
John